Sense peanut
ThermoPeanut simply connects to your smartphone using Bluetooth Smart. Using the SensePeanut companion app, you can check the current temperature or history.

Sonoff wifi schakelaar (bediening via Ewe-link)
Sonoff is a cost effective smart home solution designed and produced by ITEAD. Sonoff is a ESP8266 based WiFi wireless switch
that can connect to appliance of different types and brands.
(gekoppeld aan een elektrische kachel)